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2 years ago

Please help me it’s really important

Mathematics

1 answer:

Natali5045456 [20]2 years ago

5 0

Answer:

Faster Fitness = 0 = $90, 2 = $100, 4 = $110, 6 = $120, 8 = $130, 10 = $140, 12 = $150, 14 = $160

Drop in Fitness = 0 = $0, 2 = $40, 4 = $80, 6 = $120, 8 = $160, 10 = $200, 12 = $240, 14 = $280

Step-by-step explanation:

thats for question 3

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Svetlanka [38]

Answer: $6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}$

Step-by-step explanation:

Given

Quadratic equation is

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Solving by completing the square method

$\Rightarrow x^2-2\cdot 6\cdot x+15=0\\\text{add and subtract 36}\\\Rightarrow x^2-2\cdot 6\cdot x+15+36-36=0\\\Rightarrow x^2-2\cdot 6\cdot x+36+(-36+15)=0\\\text{using}\ (a-b)^2=a^2+b^2-2ab\\\Rightarrow (x-6)^2-21=0\\\Rightarrow (x-6)^2=21\\\Rightarrow x-6=\pm \sqrt{21}\\\Rightarrow x=6\pm \sqrt{21}$

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2 years ago

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alex41 [277]

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jok3333 [9.3K]

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Step-by-step explanation:

Please refer to the image attached to this answer.

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Answer:

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Step-by-step explanation:

1. The weights of wrestlers on the team varies by 74 lbs. This is the range, the difference between the maximum and the minimum value.

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